Three years ago, Serizawa was troubled with about his psychic powers. One day, he was visited by the boss, Suzuki Toichiro. Serizawa ends up trusting him since he's the first person to understand what he's going through. But Mob then brings up the fact that Serizawa is being used and tells him, "I'll be your friend." Hearing Mob say that, Serizawa... 

Meanwhile, after defeating Sho, the boss starts gathering up the energy he was sharing with his followers and turns into an energy monster.
Serizawa-san told me that
your son was trying to stop you.
أخبرني سيريزاوا أنّ ابنك كان يحاول إيقافك
Serizawa hat mir erzählt,
dass dein Sohn dich davon abbringen wollte.
Serizawa-san me contó que tu hijo
intentaba detenerte.
Serizawa-san me contó que tu hijo
intentaba detenerte.
Serizawa m’a parlé du fils
qui désirait arrêter son père.
Serizawa-san mi ha detto che
suo figlio stava cercando di fermarla.
O Serizawa me disse que seu filho 
estava tentando impedi-lo.
Серидзава рассказал,